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Specialized - Switching Tube ·MicrowaveTRSwitch

WF45

Self-operating broadband X-band TR gas-discharge cell covering approximately 8.49–9.58 GHz for radar duplexers, equivalent to American type 1B63A.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

Ferranti WF45 is a self-operating broadband X-band T.R. gas-discharge cell for branched or balanced duplexers. It covers about 8.49-9.578 GHz, is rated to 200 kW, and is equivalent to American type 1B63A.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

MicrowaveTRSwitch

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Microwave T.R. gas-discharge cell; device-specific primer, breakdown, leakage, recovery, frequency and power data are retained in parameter rows.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Ferranti

Published operating points and test conditions from this source.

SECTION 1

MicrowaveTRSwitch

Frequency

  • Frequency range

    8490 to 9578 Mc/s

Other

  • Maximum transmitter line power

    200 kW

    Peak

  • Minimum transmitter line power

    4 kW

  • Primer supply voltage

    -1500 to -650 V

    Negative D.C.

  • Primer current

    100 to 180 uA

Characteristic

  • Maximum VSWR, central band

    1.4

    8565-9487 Mc/s

  • Maximum VSWR, full band

    1.9

    8490-9578 Mc/s; OCR reads 1.9

  • Maximum insertion loss

    0.9 dB

    Primer energized

  • Total leakage power

    70 mW

    200 kW peak

  • Spike leakage energy

    0.2 erg/pulse

    200 kW peak

  • Maximum primer breakdown power

    250 mW

  • Maximum recovery time to -6 dB

    4 us

  • Maximum arc loss at 4 kW

    0.8 dB

  • Primer operating voltage

    200 to 375 V